Angle-cock device



April 2, 1929. J7 c. MccuNE 1,707,273

I ANGLE COCK DEVICE Filed Jan 1 928 INVENTDR JOSEPH C MCUNE ATTORNEY Patented Apr. 2, 1929.

uiuTEn STATES PATENT OFFICE.

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stew-@ ems Application filed January l, 1935; Serial No. 2 4 1 427 'lhis inventioi' relates to fluid pressure brakes, and more particularly to an angle coclcdrvice for controlliin coinnlunication throuefh the brake pipe at the end otta car.

'llhdprincipal object of my invent on is to provide an angle cock device lltVHlQ inn proved means tor maintainring conzniunice.- lion through the brake pipe 111 case strangle coclc should he accidentally or maliciously tinned to its closed position and in which a carhavino; a charged brake pipe maybe con nected to a car having an uncharged braiae pipe without causing an en'iergcncy apphcatiun oil the brakes.

in the accompanying drawing, the single figure is tlliOltWiltlUnfll View of two connected angle cock devices embodying uy invention, one oi the angle cool; dcvicesbeing shown 111 sectioi'i.

[is shown in the drawing, the angle cock device may comprise a casing 1 having; a passae'e 2 connected to the bral ze pipe 2-3 and a ind-sane at connected to the usual flexible hose l; assage 2 opens into a chan'iber i and conununication from said passage to said chamber is controlled by a piston valve 7.

Said valve is mounted in a piston 8 and subiect to the pressure of a spring); 9. l istent} is subject to the pressure of a (30.11 sprlng 1O contain-ed. in chamber 11,

it pas use 12 leads from chamber 11 and is adapted to be connected to passage 2 through a passage 1?; having a restricted portion 15%, and a flexible hose 15 having a hand operated coupling 16 at the outer end which is adapted to be coupled to a counterpart coupling position 17 at the outlet of passage 12.

Passage 1- opens into chamber 6 and also opening; into said. chamber is a passage 18 which leads to a plug valve 19, having; an operating iandl-e 20. In the position shown in the drawing, a cavity 21 in said valve connects passage 18 with a passage 22, leading to passage 2.

In operation, when it is desired to connect a car having its brake pipe charged with fluid under pressure to a car having an uncharged brake pipe, the usual hose couplings 23 at the end of the flexible hose 5 of each car are coupled together and the special hose coupling 16 is connected to the coupling portion 1'7 on each car.

Assuming the angle cock device at the right oi the drawing to be on the ar having the chargeil brake pipe, the plug valve 19 on this car is turned to the position shown, so that fluid under pressure supplied from passage 2 to chamber (j at a rate determined by the lion area of cavity 21,which is less than the rate necessary to eilfeg'st an emergency reduction in bralte pipe pressure.

Passage 2 being connected to passage 12 througl'i the flexible hose 15, the fluid pressure in chamber 11 at one side of piston 8 is equal to the il'lllltl pressure in passage 2, and ctmseiplently the liluid pr are in chamber 11 plus the pressure of spring 10 ensures that the piston 8 will be held seated in the position shown in, the drai ving, so that the valve 7 is held seated, closinn direct oon1nu111ieation from passage 2 to passage 4.

When the pressure inthe'uncharged brake pipe has been built up substantially to the pressure in the charged portion oi. the brake pipe, the special hosecouplinp 16 of each angle cock device is uncoupled from the corresponding coupling portion 17 and the coupling heads 16 oi the adjacent cars are coupled together.

The chamber 11 of each an gle cook device being new open to the atmosphere through the passage 12, thepiston 8 and the valve 7 will be shitted outwardlyi opening direct conununication from pasrage 2 to passage 4:. It will thus be seen that with the above de scribed constriu-tion, a car having a charged brake pipe may be coupled to a car having an uncharged brake pipe, without causing an emergency application of the brakes.

In uncoupling, the plug valve 19 on each car is turned to its closed position, and then the special hose couplings 16 are uncoupled. The escape of fluid through the hose coupling; 16 to the atmosphere will be small, due to the passage 13 being provided with a restricted portion 14.

The coupling head 16 of each angle COCl-I device is then coupled to the corresponding coupling portion 17. The fluid pressures on opposite sides of the piston 8 then quickly equalize, pern'iitting the spring 10 to force the piston 8 to its seat as well as the valve 7. After the valve 7 has been seated, the usual hose couplings 23 may be separated.

lVhile one illustrative embodiment of the invention has been described in detail, it is not my intention to limit its scope to that embodiment or otherwise than by the terms of the appended claims.

Having now desc 'ibed my invention, what I clalm as nevv and desire to secure by Letters Patent, 1s

' Y 1, The combination With a brake pipe, of a valve for controlling communication from the brake pipe side of the valve to the flexible hose side, a. piston for operating said valve, and manually detachable means "for connecting one side of said piston to the brake pipe side of said valve.

7 2. The combination With a brake pipe, of a Valve for controlling communication from the brake pipe side of the valve to the flexible hose side, a piston for operating said valve, manually detachable means for connecting one side of saidpiston to the brake pipe side of said valve, and a manually operable valve for supplying fluid from the brake pipe to the flexible hose at a restricted rate.

3. The combination With a brake iae of a Pl 7 ma n valve for controllmg communication from the brake pipe side of said valve to the l a flexible hose connected to the brake pipe side of the valve, and a detachable coupling connected to said hose for connecting the brake pipe side of the valve to one side of said piston.

5. The combination With a brake pipe, of a main valve for controlling comn'iunication from the brake pipe side of said valve to the other side, a piston for operating said valve, a flexible hose connected to the brake pipe side of the valve having; a hose coupling; adapted to be connected to a corresponding hose coupling of an adjacent car, and :1 volt pling portion to which said hose coupling may be connected to establish comnmnieation from the brake pipe side of the valve to one side of said piston.

G. The combination with a brake pipe and a flexible hose connected to said brake pipe, of a main valve for controlling a main communication from the brake pipe side of the valve to the flexible hose side, a piston for operating said valve, a by-pass tor connecting the brake pipe side of the main valve to the flexible hose side, a manually operable valve for controlling communication through said by-pass, and manually detachable means for connecting the brake pipe side of said main valve to one side of said piston.

In testimony whereof I have hereunto set my hand.

JOSEPH o. MoCUNE. 

